[DML] Re: Bad bearing or...? (Tire Roar)

["content22207" <brobertson@xxxxxxxxxxxx>]

That's the problem with an aggressive (all season, off road, etc)
tread  versus a highway or touring tread. What you're actually hearing
is air being forced out of the lateral grooves. Is exacerbated by
softer "performance" tire rubber (50,000 mile versus 80,000 mile). 

Until you've driven the same vehicle with opposite style tires, you
have no idea how loud and pervasive tire roar can be.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "Harold McElraft" <hmcelraft@xxxx> wrote:
> I see there are plenty of thoughts on this symptom. In my 
> experience, a bad bearing that loud can be easily identified. Based 
> on your description however, I would say you're hearing tire noise. 
> BF Goodrich and Goodyear tires are especially prone to give you an 
> off-road noise after about 10-15,000 miles, especially from the 
> rear, if they are not rotated. I had a set that got to the point I 
> couldn't hear the radio well. Switching the tires to the other side 
> of the car may give some relief if the tires are not directional. 
> Many directional tires are prone to this symptom (a good reason to 
> avoid them in my opinion). I haven't had that problem with the 
> Michelin's yet with a bit over 12,000 miles and one rotation 
> (switching sides).
> 
> If you do not hear or FEEL any bearing noise with the wheel off the 
> ground I would try and find someone with which to swap wheels and 
> tires before tearing down to bearings.
> 
> Harold McElraft - 3354
> 
> 





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